Scintillation Efficiencies at High Solute Concentrations: Possible Energy Transfer from S3 States of Excited Aromatic Solvents
Scintillation Efficiencies at High Solute Concentrations: Possible Energy Transfer from S3 States of Excited Aromatic Solvents
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高溶质浓度下的闪烁效率：激发的芳香族溶剂的 S3 态可能的能量转移
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发表时间：
1970
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通讯作者：
D. Horrocks
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作者：
D. Horrocks
在正常溶质浓度（3-10 g/L）下，溶液的相对闪烁效率取决于特定溶剂; 1，2，4-三甲基苯>对二甲苯>甲苯>苯。相对闪烁产率似乎遵循与芳香族溶剂的S3 → S1的内部转化效率相同的一般趋势。在高溶质浓度（>150克/升），这些解决方案的相对闪烁效率是独立的特定的芳香族溶剂。假设荧光是通过在S3 → S1内部转换之前涉及能量转移的过程产生的。一种可能的机制涉及能量从溶剂的S3态转移到溶质的激发态F3。浓缩溶液的相对闪烁效率将取决于过程F3 → F1的内部转换效率。
At normal solute concentrations (3–10 g/liter) the relative scintillation efficiency of a solution is dependent upon the particular solvent; 1,2,4‐trimethylbenzene>p‐xylene>toluene>benzene. The relative scintillation yields seem to follow the same general trend as the efficiency of internal conversion of S3 → S1 of the aromatic solvent. At high solute concentrations (>150 g/liter) the relative scintillation efficiency of these solutions was independent of the particular aromatic solvent. It was assumed that the fluorescence was produced by a process which involved energy transfer before the S3 → S1 internal conversion. A possible mechanism involves the transfer of energy from the S3 state of the solvent to an excited state of the solute, F3. The relative scintillation efficiency of concentrated solutions would then be dependent upon the internal conversion efficiency for the process F3 → F1.